Download of ARNDT 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program lies within Photo & Graphics Tools, more precisely 3D Design. This free software is an intellectual property of Dept. of Transport and Main Roads, Queensland. The most popular version of the ARNDT is 1.0.
From the developer:
ARNDT is a software program whose purpose is to enable road designers to identify potentially hazardous geometry of proposed or existing roundabouts and predict accident rates and costs for proposed or existing roundabouts. This enables a designer to determine if the additional construction costs of a particular roundabout layout warrant the saving in accident costs.
You may want to check out more software, such as CopyCd, which might be related to ARNDT.